Pressure sensing film aids ultrasonic welding

12 May 2010 Manufacturing / Production Technology, Hardware & Services

Ultrasonic welding (USW) is a joining technique that uses high-frequency ultrasonic acoustic vibrations to create solid-state welds. In the electronic, computer and electrical industries, ultrasonic welding is often used to join wired connections and to create connections in small, delicate circuits. Junctions of wire harnesses are often joined using ultrasonic welding. Electric motors, field coils, transformers and capacitors may also be assembled with ultrasonic welding.

In microelectronics, it creates reliable bonds without introducing impurities or thermal distortion into components. Semiconductor devices, transistors and diodes are often connected by thin aluminium and gold wires using ultrasonic welding. It is also used for bonding wiring and ribbons, as well as entire chips to microcircuits.

To optimise the weld and prevent defects, the horn and anvil must be precisely aligned during setup so that the horn exerts uniform pressure across the entire weld area. An economical and precise procedure that will ensure this outcome involves the use of Sensor Products’ Pressurex pressure indicating sensor film.

Routine use of Pressurex during the setup of ultrasonic welders helps ensure proper contact pressure and alignment between the horn and anvil, which results in welds of greater bond strength and aids in reducing rejected product and lowering base factory cost.

Pressurex is an easy-to-use tool that reveals the distribution and magnitude of pressure between any two contacting surfaces. When placed between the horn and the anvil of the ultrasonic bonder, the film instantaneously and permanently changes colour directly proportional to the actual pressure applied. The precise pressure magnitude is then easily determined by comparing colour variation results to a colour correlation chart (conceptually similar to interpreting Litmus paper). If desired, the film can be further analysed. Pressurex is extremely thin (4 to 8 mils) and flexible, which enables it to conform to curved surfaces.

For more information visit www.sensorprod.com

Further reading:

Find high-quality flex and rigid-flex PCBs at PCBWay
PCBWay Manufacturing / Production Technology, Hardware & Services
[Sponsored] Flex and rigid-flex PCBs are widely used across various industries due to their unique combination of flexibility, durability, and design versatility. Among the leading providers, PCBWay stands out for its exceptional quality services.

Read more...

---

The ultimate range for design and repair
RS South Africa Manufacturing / Production Technology, Hardware & Services
Whether adapting existing systems or maintaining essential equipment, design and repair play a crucial role in ensuring efficiency and longevity.

Read more...

---

Next-generation SPI and AOI series
Techmet Manufacturing / Production Technology, Hardware & Services
Saki Corporation has launched its next-gen series for SPI and AOI featuring a modular design for enhanced inspection efficiency and automation.

Read more...

---

Yamaha’s Advanced Safety Package eases factory-safety
Truth Electronic Manufacturing Manufacturing / Production Technology, Hardware & Services
Yamaha Robotics SMT Section has extended availability of the Advanced Safety Package, which contains optional features to elevate printer and mounter safety above and beyond mandatory levels.

Read more...

---

Case Study: Siemens Valor automation solution
ASIC Design Services Editor's Choice Manufacturing / Production Technology, Hardware & Services
Electronics manufacturer BMK used Siemens Valor to enhance accuracy and speed up bill-of-materials quotations.

Read more...

---

The factory beat
Electronic Industry Supplies Manufacturing / Production Technology, Hardware & Services
Change is the only constant across today’s complex manufacturing landscape. The surge of digital transformation, spearheaded by Industry 4.0, has redefined how factories operate, build, and evolve.

Read more...

---

Microtronix powers up 2025 with smart meter production for Eskom
Microtronix Manufacturing Manufacturing / Production Technology, Hardware & Services
Microtronix has kicked off 2025 with a significant milestone: the production of smart meters for Eskom, designed to assist customers with load reduction initiatives.

Read more...

---

Reliable X-ray inspection system
MyKay Tronics Manufacturing / Production Technology, Hardware & Services
Inspecting long PCBs that are often used in sectors like telecommunications, automotive, and energy, where high reliability is required, presents several unique challenges.

Read more...

---

G-Tera high-speed SMT printer
Techmet Manufacturing / Production Technology, Hardware & Services
The new generation of automatic printing presses from GKG, the all-new G-Tera, is equipped with a 3,0-megapixel LIGHT-Bolt CCD camera, an upgraded conveyor system, and an enhanced printing system.

Read more...

---

Extending AI assistance in AOI
Yamaha Motor Europe N.V. Manufacturing / Production Technology, Hardware & Services
Artificial Intelligence is renowned for image recognition and classification skills, suggesting a great fit with the objectives of automatic optical inspection.

Read more...

---